This software is widely used in modeling the automated electric drives and control systems for rolling mills. Such models were used by the authors of [42] [43][44][45] and many other researchers.
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An electrical drives is an electromechanical system that is employed to control motion by controlling electrical energy supplied during works. ... rolling mills, textile mills, fans, paper machines, pumps, and machine tools, etc. requires motion control. So, for this purpose, there needs to be a system to operate all the controls. ...
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Electrical Drives Questions and Answers PDF 1. The basic elements of an electric drive are : (a) electric motor and the transmission system. ... The range of rating of electric motor used for rolling mills is of the order of (a) 10 to 25 kW (b) 25 to 85 kW (c) 85 to 400 kW (d) 400 to 1,000 kW Answer: (c) 85 to 400 kW
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This set of Electric Drives Multiple Choice Questions Answers (MCQs) focuses on "Dynamics Types of Loads". 1. Load torques can be classified into how many types? a) Three ... Rolling mills are an example of nonlinearly decreasing torque characteristics because torque and speed exhibits inversely proportional relationships and power ...
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Power failure can completely disable an electric drive. The output power obtained from an electric drive is low. Applications of Electric Drive. Electric drives are widely used in a number of industrial and domestic applications such as −. Transportation system (like electric trains, trolleybus, etc.) Rolling mills. Paper mills. Textile mills ...
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The ABB process and power system, designed for cold rolling mills, offers advanced solutions for quality control, and analysis to meet your cold rolling steels needs in terms of thickness and flatness tolerances as well as surface characteristics. With more than 100 years of metal process experience and proficiency and knowledge obtained from ...
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Applications − Threephase synchronous motors are used for electric drives where continuous constant speed is required such as −. Air compressors. Motorgenerator sets. In the electric drives used in paper and cement industries. Continuous rolling mills. Singlephase Synchronous Motor. Singlephase synchronous motor has constant speed.
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Speed and load charts of electrical drives of a rolling mill are interdependent constraining factors applied to technological process. This is why their analysis is required for development...
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The growth rate of metallurgical production is increasing every year. Therefore, the task of simplifying, improving security and development is relevant. This is primarily due to increased economic efficiency, process safety, and increased productivity. The purpose of the article is to develop an automated electric drive system for a rolling mill transport device which would meet all the ...
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Transient processes in the electric drive of the cold rolling mill 45 0 based on FRRM In the electric d rive with FRRM, under uneve n loads, energy can be significantly saved w ith the
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In order to study the suggested technical solution, the dynamic mathematic model of the mill stand electric drive with elastic coupling was developed. The results of modelling dynamic modes and experimental studies carried out on the mill 5000 were introduced. ... The rolling model sends the table of trajectory points to the primarylevel ...
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The electrical drives that used in rolling system are a set of threephase induction motors (IM) controlled by indirect fieldoriented control (IFO). The fundamental goal of this type of control ...
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drives or Motors Synchronous motors Salient pole type synchronous Motors o applied for large power and/or heavy torque applications o for example hot strip mill rolling o Excellent torque characteristics o High efficiency o Unity power factor and ease of controllability. AC drive solution for each type of rolling mill application, ranging from large torque, slowspeed rolling mills to the ...
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Analysis of loading modes of rolling mill electrical drives is a time consuming task associated with numerous mathematical calculations. Specialized software significantly facilitates calculations. To implement computerized analysis of operation modes of engines of stand main electrical drives we need to develop new methods and software. 2.
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Rolling is the most important metal forming process. More than 95% of ferrous and nonferrous metals and alloys are processed to their usable shapes by rolling. Usable shapes of rolled metals are plate, sheet, strip, foil, different sections like rail, beam, channel, angle, bar, rod, and seamless pipe, etc., as shown in Fig. and Fig.
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The developed dynamic model of a continuous rolling mill with fourroll passes as control object taking into account electric drive interconnection by means of rolled metal has been implemented in the form of the SIMULINK visual programming software modules of the software package MATLAB . Here the authors do not provide a detailed ...
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Grid Connection Circuits for Powerful Regenerative Electric Drives of Rolling Stands. December 2022. / (57)4253.
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An improved calculation method for rolling pressure and load torque of electrical drive engine is suggested further. This method considers peculiar strain of product in high deformation zones and its accelerated motion in reverse mode. Improved analytical dependences for rolling pressure and load torque of electrical drive are reviewed.
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The range of horse power of electric motor drives for rolling mills is of the order of (A) 1 to 10 HP (B) 15 to 25 HP (C) 50 to 100 HP (D) 100 to 500 HP. Get Answer D 29. Motors preferred for rolling mill drive is (A) dc motors (B) ac slip ring motors with speed control (C) any of the above (D) none of the above. Get Answer C 30.
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A material supplier from Belgium would like to produce limestone powder for his custome...
India is rich in various mineral resources and it is an important mineral processing market
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